Electrochemical properties of (La1-xTix)(0.67)Mg0.33Ni2.75Co0.25 (x=0-0.20, at%) hydrogen storage alloys

	Electrochemical properties of (La1-xTix)(0.67)Mg0.33Ni2.75Co0.25 (x=0-0.20, at%) hydrogen storage alloys
	Dong ZW ; Wu YM ; Ma LQ ; Shen XD ; Wang LM
	2010
会议名称	3rd international symposium on functional materials/advances in functional materials conference
会议日期	2009-06-15
会议地点	jinju, south korea
关键词	ELECTRODE ALLOY NI CO PERFORMANCE SYSTEM MICROSTRUCTURES SUBSTITUTION ZR TI
页码	256-261
通讯作者	ma lq
英文摘要	(la1-xtix.)(0.67)mg0.33ni2.75co0.25 (x = 0, 0-05, 0.10, 0.15 and 0.20, at%) alloys are synthesized by arc-melting and subsequent heat solid-liquid diffusing techniques, and the crystalline structures and electrochemical properties of the alloys are investigated systematically. the structural analysis results show that all the alloys mainly consist of (la, mg)ni-3 phase with the rhombohedral puni3-type structure and lani5 phase with the hexagonal cacu5-type structure. however, when the ti content is higher than 0.10, a little amount of tini3 phase start to form. electrochemical measurements show that the alloy electrodes could be activated to their maximum discharge capacity within four cycles, the maximum discharge capacity is around 321.9-384.6 mah g(-1), both the cyclic stability and the high-rate discharge ability first increased and then decrease with increasing x. all the results show that a little amount of ti substitution for la in ab(3)-type hydrogen storage alloys is effective to the improvement of the overall electrochemical properties. (c) 2010 elsevier ltd. all rights reserved.
收录类别	SCI收录期刊论文
会议录	materials research bulletin
会议录出版者	pergamon-elsevier science ltd, the boulevard, langford lane, kidlington, oxford ox5 1gb, england
会议录出版地	england
语种	英语
ISSN号	0025-5408
WOS记录号	WOS:000275778500003
内容类型	会议论文
源URL	[http://ir.ciac.jl.cn/handle/322003/47643]
专题	长春应用化学研究所_长春应用化学研究所知识产出_会议论文
推荐引用方式 GB/T 7714	Dong ZW,Wu YM,Ma LQ,et al. Electrochemical properties of (La1-xTix)(0.67)Mg0.33Ni2.75Co0.25 (x=0-0.20, at%) hydrogen storage alloys[C]. 见:3rd international symposium on functional materials/advances in functional materials conference. jinju, south korea. 2009-06-15.